1.
- 9th Highlights of Gastroenterology in the Netherlands : proceedings of a symposium held 14-17 April 1994 in Rome, Italy / edit. C. B. H. W. Lamers, C. A. Sumajow. 1995. Vol. 30, Suppl. 212 - Oslo : Scandinavian University Press, 1995 - 127 s.(Scandinavian Journal of Gastroenterology; Suppl. 212) [1, currently available 0, at library only 1]
- Chapters, articles